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国家重点基础研究发展计划(2007CB925103)

作品数:13 被引量:25H指数:3
相关作者:季长春李静郑和根王作为许正江更多>>
相关机构:南京大学安庆师范学院中国科学院福建物质结构研究所更多>>
发文基金:国家自然科学基金国家重点基础研究发展计划中国博士后科学基金更多>>
相关领域:理学生物学一般工业技术化学工程更多>>

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13 条 记 录,以下是 1-10
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Synthesis and photoluminescence of a dendritic europium complex with carbazole moieties被引量:2
2008年
A novel dendritic europium complex containing grafted carbazole units as functional peripheries was synthesized and characterized. The Foerster energy transfer from the peripheries of carbazole units to β-diketonate as well as from the hgands to the central Eu(Ⅲ) ions in the complex was demonstrated. Under the excitation of carbazole units and β-diketonate, characteristic red emission peaks at 612 nm with four shoulders due to the Eu(Ⅲ) ion transition of 5^D0→7^FJ (J=0-4) were observed for the complex.
郑佑轩周永慧Gianluca AccorsiNicola Armaroli
人工核酸酶的设计和与核酸的相互作用被引量:3
2009年
人工核酸酶在基因药物设计和分子生物学研究领域具有重要的科学意义,因此人工核酸酶的设计和酶模拟方面的研究引起了广泛关注并取得了重要进展.本文介绍近年来国内外学者和作者研究组在"双功能协同催化"、"双核协同催化"、"无金属催化"的人工核酸酶方面的研究进展,尤其是氮杂冠醚衍生物作为人工核酸酶与DNA相互作用的研究进展.
张晶晶邵莺韦丽李英盛欣刘芳陆国元
关键词:DNA切割氮杂冠醚
Synthesis and Crystal Structure of a Novel Heterometallic Complex [Na_2Cu_2Gd_2(pdc)_4(H_2O)_(14)·2H_2O]被引量:1
2009年
A novel heterometallic complex [Na2Cu2Gd2(pdc)4(H2O)14·2H2O] (H3pdc = 1H- pyrazole-3,5-dicarboxylic acid) has been synthesized and characterized by 1R spectra, elemental analysis, and single-crystal X-ray analysis. The crystal belongs to the monoclinic system, space group P2 1/c with a = 7.9521(18), b = 12.251(3), c = 22.293(5) A, β = 110.173(5)°, V= 2038.5(8) A^3, Mr = 1388.13, Z = 2, F(000) = 1352, Dc = 2.261 g/cm^3,/2 = 4.380 mm^-1, the final R = 0.0409 and wR = 0.0622 for 2453 observed reflections with I 〉 2σ(I). The structural analysis shows that the Na^I, Cu^II and Gd^II ions are linked together by two kinds of bridging ligands (pdc^3- and H2O) to form a main moiety [Na2Cu2Gd2(pdc)4(H2O)14], which can be regarded as a centrosymmetric dimmer of [NaCuGd(pdc)2(H2O)7]. Many hydrogen bonds exist in the complex to build a 3D supramolecular framework.
王燕郭翠莲郑和根沈应中
关键词:COPPERGADOLINIUM
Two novel interpenetrated zinc(Ⅱ) and cadmium(Ⅱ) coordination polymers based on 4-imidazole-benzoate:Syntheses,crystal structures and properties被引量:5
2009年
Two novel interpenetrated coordination polymers,[Zn(IBA)2]n (1) and {[Cd(IBA)2(H2O)].4H2O}n (2),have been synthesized by using 4-imidazole-benzoic acid (HIBA) as ligand under hydrothermal con-ditions. Complex 1 crystallizes in a chiral space group and has a two-fold interpenetrated 2D network structure with (4,4) topology,while complex 2 is a 3D porous dia network with four nets interpene-trating each other. The SHG activity of 1 and the photoluminescent property of 2 have been investi-gated.
BAI ZhengShuai,CHEN ShuiSheng,ZHANG ZhengHua,CHEN ManSheng,LIU GuangXiang & SUN WeiYin State Key Laboratory of Coordination Chemistry,Institute of Coordination Chemistry,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China
关键词:INTERPENETRATIONCRYSTAL
Unprecedented synthesis of chiral calix[4](aza)crowns and its potent encapsulating methanol
2009年
Unprecedented synthesis of chiral (aza)crown ethers of calix[4]arene derivatives bearing a carboxyl amide bridge was described. The synthesis proceeds through condensation of the corresponding dinitriles with optically active 1,2-aminoalcohols, and is catalyzed by the ZnCl2 Lewis acid at elevated temperature in a very efficient one-pot process. The cavity of calix[4](aza)crowns can encapsulate methanol molecules by O-H⋯п interaction, which has been confirmed by X-ray crystal structures and ESI-MS.
ZhengYi Li MingYu Teng JieJie Ma Ji Huang LeYong WangYi Pan
关键词:CHIRAL(aza)crown
Syntheses and Crystal Structures of Three Coordination Complexes Based on Ln(Ⅲ) and mpca-Ligand
2010年
Three complexes obtained by the reaction of Pr(Ⅲ) or Nd(Ⅲ) salts with 5-methyl-2-pyrazinecarboxylic acid(Hmpca) are structurally determined by single-crystal X-ray diffraction.Complex [Pr(mpca-)3(H2O)2]2·6H2O(1) is composed of dinuclear Pr(Ⅲ) units with two metal centers bridged by two anionic mpca-ligands in a κ^3O,O':O' bridging mode.Complexes [Pr(mpca-)3]n(2) and [Nd(mpca-)3]n(3) are isostructures,and they consist of polymeric chains based on Ln(Ⅲ) and mpca-ligands.Each pair of adjacent metal centers is linked by three mpca-molecules in a κ^3N,O:O bridging mode.
徐基贵卢振中卓馨郑和根
H型发色团和含氟聚酰亚胺非线性光学材料
在有机发色团和聚合物非线性光学材料设计中存在着非线性-透光性-热稳定性的矛盾。为了克服这一矛盾,我们提出了D-π-A单元非共轭并联的设计思路,以9,10-二氢蒽为骨架合成了一系列H-型发
张超智吴德林陆国元刘芳吕昌贵朱菁崔—平
关键词:含氟聚酰亚胺非线性光学材料
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推-拉电子结构的共轭聚合物的合成和光电性质
具有D-A(推-拉电子)结构的共轭聚合物具有独特的光物理和电化学性质,因而它们在光伏电池、光开关、发光二极管、场效应晶体管等光电器件方面有重要的应用。3,4-乙撑二氧噻吩(EDOT)是富电子杂环,具有优良的电性质。因此我...
吴德林史界平丁永陆国元
关键词:共轭聚合物光电性质
Tripod molecules build molecular networks and open-dimer capsules by weak interactions
2010年
Three tripod molecules, tris(2-methoxy-5-nitrobenzyl)phosphine oxide (1), tris(2-butoxy-3-methyl-5-nitrobenzyl)phosphine oxide (2), and tris(3-nitrobenzyl)amine (TNBA), were synthesized and crystallized. The structures of 1, 2, and their comparison (TNBA) were determined by X-ray crystallography. It is noteworthy that compound 1 interacted with adjacent molecules via π-π stacking and C-H···π interactions to yield an open supramolecular network with the porosity P in 8.9%, whereas compound 2 gathered closely to form an open-dimer capsule by sixfold N-O···π and triple C-H···O interactions, which showed a rare example of a stable in, out-invertomer of phosphine inversion existing in open-dimers. A series of columns were built and arranged side by side by these weak interactions. By contrast, TNBA crystallized to form a 2D network maintained by C-H···O and C-H···πinteractions. It seems minor changes of the chemical structure may cause large differences in the crystal structure and interactions in crystal engineering.
HAN Jun1, DENG Chao1, FANG Ru1, LI YiZhi2, WANG LeYong1& PAN Yi2 1Key Laboratory of Mesoscopic Chemistry, Ministry of Education
关键词:TRIPODSUPRAMOLECULAR
Synthesis and nonlinear optical properties of copolymers of fluoro-containing bisphenol A and chromophores
2011年
A series of new fluoro-containing copolymers have been synthesized by a Mitsunobu reaction with 4,4'-(hexafluoroisopropylidene) bisphenol A(6FBPA) and the corresponding N,N-dihydroxyethylaminoaryl azo or ring-locked triene compounds, which have high thermal stability and good solubility in organic solvents.The nonlinear optical(NLO) measurements made by Marker fringe method at 1064 nm indicate that the copolymers embedded with the ring-locked triene and azo chromophores exhibit higher macroscopic nonlinear optical coefficient(70.2 pm/V and 26.5-34.6 pm/V,respectively).Thermal analysis and UV-visible absorption spectra show that the copolymers have good thermal stability(T_d= 264-319℃) and optical transparency (λ_(max)500 nm).
Jie Ping Shi Hui Yang Li Wei Hong Wen Hu Guo Yuan Lu
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